Remache Vinueza, Byron
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Preferred name
Remache Vinueza, Byron
Main Affiliation
Quito
Email
byronremache@uti.edu.ec
ORCID
Scopus Author ID
57218198076

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Vibrotactile stimulus duration threshold for perception of pulse to vibration transition

2025 , Remache Vinueza, Byron , Andrés Trujillo-León , Fernando Vidal-Verdú

This study investigates the minimum stimulus duration required to perceive the transition from pulse to vibration sensations, a critical parameter for optimizing information transmission via haptic interfaces such as smartphones, tablets, smartwatches, game consoles, and sensory substitution systems. Efficient transmission relies on minimizing stimulus duration, enabling more information to be conveyed in less time. A preliminary experiment established intensity perception thresholds—the minimum vibration intensities detectable—at 40, 80, 150, 250, 300, and 590 Hz, frequencies primarily activating the Pacinian (Rapid Adapting II) psychophysical channel. Subsequently, 35 participants determined the minimum durations needed to perceive the transition from pulse to vibration sensations across this frequency range. Results revealed a consistent minimum duration of approximately 30 ms, contrasting with findings in audition, where shorter durations suffice at higher frequencies, but aligning with prior studies in tactile perception.

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A Comparative Investigation of Cutaneous Rabbit and Funneling Tactile Illusions for Implementation in Vibrotactile Displays

2024 , Remache Vinueza, Byron , Andrés Trujillo-León , Fernando Vidal-Verdú

We designed two psychophysical experiments to compare the cutaneous rabbit tactile illusion with a cutaneous rabbit recreated using sequential funneling tactile illusions. These illusions were rendered between a pair of actuators held with the hands. A tactile illusion is a psychophysical phenomenon that arises when the real stimulus does not match the perceived sensation. Designers exploit tactile illusions to efficiently increase the resolution of vibrotactile displays for human-computer interaction applications. Initially, participants qualitatively compared both rendering methods. Subsequently, individuals reported the upper threshold of the Inter-Stimulus Onset Interval (ISOI) for the cutaneous rabbit and the Time Between Funneling (TBF) illusions of the recreated cutaneous rabbit using funneling, when the illusion broke apart. The primary differences reported between both methods for rendering the cutaneous rabbit illusion were related to the perceived amount of jumps and duration. Overall, funneling performed better at evoking the illusion of a hopping rabbit, while both methods effectively conveyed direction sensations. Finally, the upper ISOI threshold we found for the cutaneous rabbit was consistent with the value reported in the literature, approximately 190 milliseconds, and was surpassed by the TBF of the recreated cutaneous rabbit using funneling

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